<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model="obj.name" />
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model="obj.age" />
    </div>
    <div>
      <span>性别:</span>
      <select v-model="obj.sex">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="addFn">添加/修改</button>
    </div>
    <div>
      <table border="1" cellpadding="10" cellspacing="0">
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item, index) in arr" :key="index">
          <td>{{ index + 1 }}</td>
          <td>{{ item.name }}</td>
          <td>{{ item.age }}</td>
          <td>{{ item.sex }}</td>
          <td>
            <button @click="delFn(index)">删除</button>
            <button @click="revFn(index)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      arr: [
        { name: "Tony", age: 18, sex: "男" },
        { name: "Nana", age: 18, sex: "女" },
      ],
      obj: {
        name: "",
        age: "",
        sex: "",
      },
      flag: true,
      idn: "",
    };
  },
  methods: {
    // 添加
    addFn() {
      if (this.flag) {
        if (
          this.obj.name.trim() === "" ||
          this.obj.age.trim() === "" ||
          this.obj.sex.trim() === ""
        ) {
          return alert("输入正确的操作");
        }
        this.arr.push(this.obj);
        this.obj.name = "";
        this.obj.age = "";
        this.obj.sex = "";
      } else {
        this.arr[this.idn].name = this.obj.name;
        this.arr[this.idn].age = this.obj.age;
        this.arr[this.idn].sex = this.obj.sex;
        this.obj.name = "";
        this.obj.age = "";
        this.obj.sex = "";
        this.flag = true;
      }
    },
    // 编辑
    revFn(i) {
      this.obj.name = this.arr[i].name;
      this.obj.age = this.arr[i].age;
      this.obj.sex = this.arr[i].sex;
      this.flag = false;
      this.idn = i;
    },
    // 删除
    delFn(i) {
      this.arr.splice(i, 1);
    },
  },
};
</script>
